The Influence of Different Root Temperature Treatment on Tomato Plant Growth
The test studied the influence of different root temperature treatment on tomato plant growth by circular nutrients cultivation mode.The results showed that compared with the natural root temperature of 28 ℃,reducing the root temperature to 23 ℃,root diameter and root length respectively increased 11.3％,3.9％;plant height,stem diameter respectively increased 8.26 cm,11.34％;the product of leaf length and leaf width increased 11.85％.Rising the root temperature to 33 ℃,root diameter and root length respectively reduced 14.52％,23.81％;plant height,stem diameter respectively reduced 4.79 cm,13.04％,the product of leaf length and leaf width reduced 24.81％.The leaves rate of reducing the root temperature to 23 ℃,the natural root temperature of 28 ℃ and rising the root temperature to 33 ℃ were respectively 0.4,0.38,0.33 piece/d.It explained that reducing root temperature to 23 ℃ could promote plant root and stem growth,make plant thrive;if the root temperature continued to rise,the root and stem could not grow well,so the plant normal growth would be affected.
summer high temperaturetomatoroot temperaturegrowth
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NSTL
万方数据
维普
